[SI-LIST] Re: UltraCAD ESR and Bypass Capacitor Caculator

  • From: Scott McMorrow <scott@xxxxxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Tue, 12 Aug 2003 12:58:44 -0700

Chris,
Go get'm.
I'm bored and tired of this thread.

scott


Chris Cheng wrote:

>Then what's the use of it if it can't take the placement into consideration
>and calculate loop inductance of the leads/pads of the caps in the PCB which
>I think will easily dominate over the ESL of the cap ?
>
> -----Original Message-----
>From:  Doug Brooks [mailto:doug@xxxxxxxxxx] 
>Sent:  Tuesday, August 12, 2003 9:13 AM
>To:    si-list@xxxxxxxxxxxxx
>Subject:       [SI-LIST] Re: UltraCAD ESR and Bypass Capacitor Caculator
>
>While I've enjoyed the entire discussion under this heading, I feel like I 
>have to say once again that the UltraCAD calculator says NOTHING at all 
>about placement. THAT discussion picked up under this heading some how. Our 
>calculator is just one (repeat "one") way to calculate a a complex 
>impedance function.
>
>Doug
>
>At 03:56 PM 8/12/2003 +1000, you wrote:
>  
>
>> it may be a good idea to put
>>    
>>
>
>Doug Brooks' new book, "Signal Integrity Issues and Printed Circuit Board 
>Design" has just been released by Prentice Hall. See details and ordering 
>info at www.ultracad.com
>____________________________________________________________________________
>__
>
>
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-- 
Scott McMorrow
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
(503) 239-5536
http://www.teraspeed.com




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